The kids love helping me mix Gil Water. They fight over who gets to scoop out the powders, who gets to hold the funnel, who gets to pour it all into plastic water bottles. No one but me, however, can pack the bottles into my bag, along with my clothes and towels and books and shades and wristbands. (My rackets, as always, go in later.) No one but me touches my tennis bag, and when it’s finally packed, it stands by the door, like an assassin’s kit, a sign that the day has lurched that much closer to the witching hour.

At five, Gil rings from the lobby.

He says, You ready? Time to throw down. It’s on, Andre. It’s on.

Nowadays everyone says It’s on, but Gil has been saying it for years, and no one says it the way he does. When Gil says It’s on, I feel my booster rockets fire, my adrenaline glands pump like geysers. I feel as if I can lift a car over my head.

Stefanie gathers the children at the door and tells them it’s time for Daddy to leave. What do you say, guys?

Jaden shouts, Kick butt, Daddy!

Kick butt, Jaz says, copying her brother.

Stefanie kisses me and says nothing, because there’s nothing to say.

IN THE TOWN CAR Gil sits in the front seat, dressed sharp. Black shirt, black tie, black jacket. He dresses for every match as if it’s a blind date or a mob hit. Now and then he checks his long black hair in the side mirror or rearview. I sit in the backseat with Darren, my coach, an Aussie who always rocks a Hollywood tan and the smile of a guy who just hit the Powerball. For a few minutes no one says anything. Then Gil speaks the lyrics of one of our favorites, an old Roy Clark ballad, and his deep basso fills the car: Just going through the motions and pretending

we have something left to gain—